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Books about Dongchul:
Dongchul Ha: Recent drawings : May 11-17, 1981 Growrich Gallery by Dong-chul Ha (1981)
A utility based comparison of some models of exchange rate volatility / Kenneth D. West, Hali J. Edison, Dongchul... by Kenneth D. West (Jan 1, 1993)
Ha Dong-Chul Invitational Exhibition by unknown (1988)